I was told by another iPhone user that if I upgrade my iPhone 4 to the next iPhone up (whenever it comes out), it won't invalidate my current unlimited data plan. Can someone point me to any Verizon documentation anywhere which states this? My local drone Verizon representative (who probably makes minimum wage) said upgrading my phone would completely invalidate my contract, thus erasing my unlimited data plan. I hope she's wrong, but at this point I don't know who's right. I'm going to have to get my magnifying glass out and go over the fine print in my Verizon contract. I just thought someone may know this information offhand. But I'm going to need something other than just an assertion that she's wrong. Thanks.